145183207 has 4 divisors (see below), whose sum is σ = 156351160. Its totient is φ = 134015256.

The previous prime is 145183133. The next prime is 145183229. The reversal of 145183207 is 702381541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702381541 = 181 ⋅3880561.

It is a cyclic number.

It is not a de Polignac number, because 145183207 - 2¹⁹ = 144658919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145183267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5583957 + ... + 5583982.

It is an arithmetic number, because the mean of its divisors is an integer number (39087790).

Almost surely, 2^145183207 is an apocalyptic number.

145183207 is a deficient number, since it is larger than the sum of its proper divisors (11167953).

145183207 is a wasteful number, since it uses less digits than its factorization.

145183207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11167952.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 145183207 is about 12049.1994339873. The cubic root of 145183207 is about 525.5799571317.

The spelling of 145183207 in words is "one hundred forty-five million, one hundred eighty-three thousand, two hundred seven".